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Geologic units in Freestone county, Texas

Calvert Bluff Formation (Paleocene to Eocene) at surface, covers 38 % of this area

Calvert Bluff Formation

Alluvium (Holocene) at surface, covers 14 % of this area

Alluvium

Hooper Formation (Paleocene) at surface, covers 13 % of this area

Hooper Formation

Carizzo Sand (Eocene) at surface, covers 8 % of this area

Carizzo Sand

Reklaw Formation (Eocene) at surface, covers 8 % of this area

Reklaw Formation

Simsboro Formation (Paleocene) at surface, covers 7 % of this area

Simsboro Formation

Queen City Sand (Eocene) at surface, covers 6 % of this area

Queen City Sand

Wills Point Formation (Paleocene) at surface, covers 4 % of this area

Wills Point Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 2 % of this area

Terrace deposits

Wilcox Group, undivided (Paleocene to Eocene) at surface, covers 0.1 % of this area

Wilcox Group, undivided

Upper Cretaceous rocks, undivided (Late Cretaceous) at surface, covers < 0.1 % of this area

Upper Cretaceous rocks, undivided

Kemp clay and Corsicana Marl, undivided (Late Cretaceous; Gulfian Series) at surface, covers < 0.1 % of this area

Kemp clay and Corsicana Marl, undivided